MolluscaBase taxon details
original description
(of Calipyrgula stewartiana Pilsbry, 1935 †) Pilsbry, H. A. (1935). Mollusks of the fresh-water Pliocene beds of the Kettleman Hills and neighboring oil fields, California. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 86: 541-570. Philadelphia.
page(s): 557-558, pl. 21, fig. 2 [details] Available for editors [request]